Liam is setting up folding chairs for a meeting. if he arranges the chairs in 8 rows of the same length, he has 9 chairs left over. if he arranges the chairs in 6 rows of that same length, he has 21 left over. how many chairs does liam have?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%